/**
 * @param {string} path
 * @returns {Boolean}
 */
export function isExternal(path) {
  return /^(https?:|mailto:|tel:)/.test(path);
}
//把html的strong标签转化成md的加粗效果
export function strongToMd(text) {
  return text.replace(/<strong>|<\/strong>/g, "**");
}
/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUsername(str) {
  const valid_map = ["admin", "editor"];
  return valid_map.indexOf(str.trim()) >= 0;
}

/**
 * @param {string} url
 * @returns {Boolean}
 */
export function validURL(url) {
  const reg =
    /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/;
  return reg.test(url);
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validLowerCase(str) {
  const reg = /^[a-z]+$/;
  return reg.test(str);
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUpperCase(str) {
  const reg = /^[A-Z]+$/;
  return reg.test(str);
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validAlphabets(str) {
  const reg = /^[A-Za-z]+$/;
  return reg.test(str);
}

/**
 * @param {string} email
 * @returns {Boolean}
 */
export function validEmail(email) {
  const reg =
    /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
  return reg.test(email);
}
export function validTel(phone) {
  // 正则表达式：以1开头，第二位是3-9，后面跟着9位数字
  const reg = /^1[3-9]\d{9}$/;
  return reg.test(phone);
}
//去掉前面的数字和空格
export function removeStartingNumbersAndSpaces(str) {
  return str.replace(/^\s*\d+/g, "");
}
// 获取随机数字字母
export function randomAlphaNum(length = 6) {
  let result = "",
    characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
    char_length = characters.length;
  for (let i = 0; i < length; i++) {
    let randomIndex = Math.floor(Math.random() * char_length);
    result += characters[randomIndex];
  }
  return result;
}
